I found this on the Pax Lodge site and it would be a great edition to any meeting on the World Centers
Each player is given a card. And then the players must organize themselves in to groups so that each group has one card from each category for one of the world centers. There are 8 categories (name, location, year opened, “hello”, name of country, national flag, an activity you can do and a food). I’m sure you can remove categories if you don’t have enough players. For a very large group you could make more then one copy of each card.